Since EF=FG, you can set 6x - 10 = to 3x + 11
[tex]6x -10 = 3x +11[/tex]
Then add like terms
[tex]6x - 3x = 11+10[/tex]
so, [tex]3x = 21[/tex]
Now you can divide by 3 to get [tex]x = 7[/tex] :)
then put it back into [tex]6x - 10 [/tex]
[tex]6(7) - 10 = EF[/tex]
so, [tex]EF = 32[/tex]